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H12-221 Exam Dumps - HCNP-R&S-IERN (Huawei Certified Network Professional-Implementing Enterprise Routing Network)

Question # 4

Which of the following statements about OSPF neighbor state transition are true? (Select 3 answers)

A.

The neighbor state transitions from "Loading" to "Full" when a LoadingDone event occurs.

B.

The neighbor state transitions from the "Exstart" to "full" when a Negotiation Done event occurs.

C.

The neighbor state transitions from the "Exchange" to "Full" when an ExchangeDone event occurs.

D.

The neighbor state transitions from "Exchange" to "Loading when an ExchangeDone event occurs.

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Question # 5

ACLs can match routing information or data packet addresses to filter unmatched routing information or data packets.

A.

TRUE

B.

FALSE

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Question # 6

Which of the following is used to avoid routing loops in BGP?

A.

Use ORIGIN attribute to record the origin of the route.

B.

Use AS_PATH attribute to record all AS areas that a route passes.

C.

Use NEXTJHOP attribute to record next hop path

D.

Use MED attribute to influence export selection of other Ass

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Question # 7

Which statement about OSPF is false?

A.

Hello messages are used as a form of greeting to discover other routers on its networks and establish relationships between neighboring devices. On broadcast or NBMA networks, Hello messages can also be used to elect a DR or a BDR.

B.

DD packets describe the summary LSDB information by carrying LSA headers.

C.

The intervals at which two routers send Hello messages must be consistent; otherwise, cannot be established relationships between neighboring devices.

D.

DD packets contain headers of all LSAs for periodic LSDB synchronization between OSPF neighbors.

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Question # 8

Which of the following is a private AS number?

A.

65410-65535

B.

1-64511

C.

64512-65535

D.

64511-65535

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Question # 9

How does an IGMP router maintain group memberships on a network? (Select 2 answers)

A.

The router maintains a timer for each group membership which it refreshes for hosts that send report messages and deletes the group membership of hosts that do not.

B.

The router periodically sends Query messages. After a receiver host receives the Query message, the receiver host sends a Report message.

C.

A receiver host periodically sends a Report message.

D.

The router deletes a group membership only when it receives a Leave message for this group.

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Question # 10

A broadcast and an NBMA network, each having two or more routers, must have both DR and BDR.

A.

TRUE

B.

FALSE

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Question # 11

How many bits of the MAC address space is available for mapping IP multicast addresses?

A.

24

B.

22

C.

25

D.

23

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Question # 12

An OSPF neighbor relationship fails to establish and the OSPF error information is displayed as follows. Which of the following is most likely the cause?

A.

Router IDs conflict.

B.

Area IDs are mismatched.

C.

Network masks are inconsistent.

D.

Authentication types are inconsistent.

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Question # 13

On a broadcast network or an NBMA network, not all neighbors need to set up adjacencies with each other. Therefore, the concept of establishing adjacency is applicable only to the broadcast network or the NBMA network.

A.

TRUE

B.

FALSE

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Question # 14

Which of the following statements regarding the MED attribute are true? (Select 3 answers)

A.

Based on BGP route selection rules, the MED has precedence over the AS_Path, Preferred-Value, Local-Preference, and Origin attributes.

B.

The MED of a BGP route is 100 by default.

C.

Generally, BGP compares only the MEDs of routes received from the same AS but if the "compare-different-as-med" command is configured, BGP can compare the MEDs of the routes received from multiple ASs.

D.

the default MED value 0 on a BGP indicates that the route is not specified. If the bestroute med-none-as-maximum command is configured, the maximum MED value that can be set is 4294967295.

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Question # 15

What is the network address for the IP address 190.233.27.13/16?

A.

190.0.0.0

B.

190.233.0.0

C.

190.233.27.0

D.

190.233.27.1

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Question # 16

All routing protocols can deliver default routes, supporting both forcible delivery and non-forcible delivery.

A.

TRUE

B.

FALSE

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Question # 17

How many multicast IP addresses can be represented by an IP multicast MAC address?

A.

1

B.

23

C.

32

D.

24

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Question # 18

What is the link-state ID of an ASBR-Summary-LSA?

The OSPF Router ID of an LSA's originator

The Interface IP address of the DR on the described network segment

The address of the described network segment

The Router ID of the described ASBR

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Question # 19

A company has four departments. Department A has SO PCs, Departments B and C both have 20 PCs, and Department D has 30 PCs. Assuming the IP address 192.168.1.0/x is used, which of the following statements are true if the VLSM technology is employed for subnetting? (Select 2 answers)

A.

Plan subnet 192.168.1.0/25 for Department A. The range of host addresses is 1 to 126.

B.

Plan subnet 192.168.1.128/27 for Department B. The range of host addresses is 129 to 159.

C.

Plan subnet 192.168.1.160/27 for Department C. The range of host addresses is 161 to 190.

D.

Plan subnet 192.168.1.192/27 for Department D. The range of host addresses is 192 to 222.

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Question # 20

The most remarkable characteristic of OSPF is that it can support the link-state algorithm.

A.

TRUE

B.

FALSE

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Question # 21

What is the default network mask length of 219.25.23.56?

A.

8

B.

16

C.

24

D.

32

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Question # 22

If the value of hold timers in the Open messages sent by Peer A and Peer B are 180s and 90s respectively, then what is the interval at which the Keepalive messages are sent after a BGP connection is established between these two peers?

A.

180s

B.

90s

C.

60s

D.

30s

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Question # 23

What are the advantages of subnetting? (Select 2 answers)

A.

Isolating broadcast traffic

B.

Improving network QoS

C.

Increasing the IP address usage

D.

Improving network reliability

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Question # 24

Which of the following statements are true? (Select 3 answers)

A.

The neighbor state can transition from "Down" to "Exchange".

B.

The neighbor state can transition from "Down" to "Init".

C.

The neighbor state can transition from "Init" to "Exstart".

D.

The neighbor state can transition from "Init" to "2-Way".

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Question # 25

Which of the following statements regarding ACL type are true? (Select 3 answers)

A.

ACL consists of basic ACL, advanced ACL and interface-based ACL

B.

ACL ranging from 2000 to 2999 belongs to advanced ACL

C.

ACL ranging from 3000 to 3999 belongs to advanced ACL

D.

Advanced ACL can be used to match either destination address or source address

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Question # 26

For link-state routing protocols, filtering inbound routes cannot block the transmission of link-state information. The filtering effect means that routes cannot be injected into the local routing table but neighbors can still receive complete route state information and calculate complete routes.

A.

TRUE

B.

FALSE

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Question # 27

We can have different network segments in an OSPF area. We can also have same network segment in different OSPF areas.

A.

TRUE

B.

FALSE

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Question # 28

Which of the following statements belong to BGP community attribute? (Select 3 answers)

A.

NO_EXPORT

B.

NO_ADVIERTISE

C.

LOCAL_EXPORT_SUBCONFED

D.

NO_BROADCAST

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Question # 29

Which of the following commands is used to display check information about the IGMP enabled interface?

A.

[Quidway]show ip igmp interface

B.

[Quidwayjdisplay igmp interface

C.

[Quidway]show ip igmp

D.

[Quidwayjdisplay ip interface

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Question # 30

A OSPF network may be structured, or subdivided into routing areas. Such routing areas are a set of network segments.

A.

TRUE

B.

FALSE

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Question # 31

Generally, the performance of an IP-prefix-filter is greater than that of an ACL.

A.

TRUE

B.

FALSE

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Question # 32

Which of the following is the address range assigned by IANA for SSM service in IPv4?

A.

232.0.0.0/24

B.

225.0.0.0/8

C.

232.0.0.0/8

D.

239.0.0.0/8

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Question # 33

Which session is established between BGP peers?

A.

Telnet

B.

Send Hello packet

C.

UDP

D.

TCP

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